An ester compound represented by the formula (1):wherein R represents a C1-C4 alkyl group or a C3-C4 alkenyl group, and A represents a single bond or an oxygen atom, has an excellent pest controlling efficacy, and it is useful as an active ingredient of a pest controlling agent.一種式(1)所表的酯化合物:其中,R表示C1-C4烷基或C3-C4烯基,且A表示單鍵或氧原子;該酯化合物具有優良的害蟲防治效力,且其可用為害蟲防治劑的活性成分。